/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/DatasmithSceneFactory.h
Creates an ExpressionOutput from the given type. Warning: This function's main purpose is to allow the creation of serialized expression outputs. It should not be used to add outputs to a material expression.
static [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IDatasmithExpressionOutput](API\Runtime\DatasmithCore\IDatasmithExpressionOutput) > CreateExpressionOutput ( const TCHAR * InName )